[maven-release-plugin] prepare release apache-gora-0.3

git-svn-id: https://svn.apache.org/repos/asf/gora/trunk@1478993 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/gora/trunk@1478995 13f79535-47bb-0310-9956-ffa450edef68